I was driving on a very clear day, without a single cloud in the sky. at an intersection, i noticed a silver object in the sky, which i presumed to be a very low flying 747 which struck me to be odd as i was 60 to 70 plus miles away from ohare and midway airports. looking at it closer i noticed it was not moving. i took off my sunglasses to see if i could see it better, but as soon as i did that it disappeared. putting them back on, you could easily see it again. i figured this was related to the polarized lens....Veru weird though. i immediately changed my direction to head north towards it. driving very fast, i was only about 2 miles from the object that was only about 3,000 feet in the air. i had never seen anything like this in my life. as i got closer the object began to move. at this time, i immediately felt light headed and a headache ensued (which i rarely get...Related idk). at the same moment hundreds of birds began to flock away from the object. it changed its direction a few times and began to head north. i hopped on i-57 towards chicago and drove very fast so i would not lose sight of it. as i did this the craft picked up incredible speeds towards increased altitude dramatocally. if i had to guess, roughly 15 times faster than a typical 747, but this is likely an underestimate. i was dumbfounded concluding the only explanation is new military technology or extraterrestrial. unfortuantely, the object moved so fast that it disappeared in the distance in less than 30 seconds. i decided i would turn around at the next exit at this point as it was long gone. i slowed down a bit because i noticed an unmarked all black police car flashing white, yellow, red, and blue lights pulled off on the side of the interstate. i could not identify the model, as it was a car i had never seen before and i know my cars very well. i would say the closest car would be a chrysler 300 with a sleek body kit, maybe it's the 2018 version. who knows. as i approached it i noticed it had us government plates with no other vehicles pulled over next to it and i could not see into the windows as i passed, they were tinted which striked me as odd. i thought it might be related to the presence of the craft so i kept driving past the next exit. i continued on the expressway for another 10 to 12 miles to see if anything odd would appear. as i began to merge into the right lane to get off the expressway i saw it again...Maybe 10 to 15 miles west of me hovering above a radio tower. at this point i tried to snap a photo, but figured it would not work as i could not see the object without my polarized lens. i got off the freeway and headed west towards the object which was likely above frankfort, il. at this point i noticed a prop plane heading towards it from the east and two dark planes flying in formation from the north. at this point i was about 5 miles away from it, but as the jets approached the craft it accelerated south at a very high speeds. the best part was the fact you could see it breaking the sound barrier within a matter of a few seconds. it picked up speeds so fast and headed into the skies where i lost sight of it within 10 seconds. i pulled off the road to turn around and see what types of planes where approaching. they were two fighter jets, maybe the f35 but i couldn't say definitely. they had no chance of keeping up with the object though. i hopped back on the freeway and on my way back home i noticed a strong presence of police cars. i saw 15-20 in the 20 minute drive home. as i approached my town i noticed more police lights, a fire truck, and ambulence which was weird because it was right where i began to have a headache. there was a car in the ditch on one side of the road and two cars that collided at the intersection. maybe it was just all a coincidence though, but it was very odd coincidence as i live in a farming town. i reviewed the photos i took and i managed to capture the object on one of them, which i will upload. i watched the six oclock news to see if anyone else reported it, but no news at all regarding craft, military testing, fighter jets, etc. hoping someone will see this post and possibly confirm some of these events. lastly, i have been keeping an eye out for an odd activity over the last few days. i noticed a strange, constant light that traveled much faster than the any of the other planes that fly over my house the night after. additionally, i worked outside the day after and today on the landscaping. i kept hearing roaring jet engines over the house. this occured 6 or 7 times since i saw the object on june 7th. unfortunately it has been cloudy here since then, but i can only confirm that i saw a fighter jet on two of these occasions during the day. i've lived hear since 2004 and have only seen a fighter jet once so all of this is very odd. hope someone else can provide an explanation. thanks. note: the attached photo is the original unedited photo. it has the object on the right side, if you zoom on you can see the radio tower in the distance 10 to 15 miles away or so. it is directly above the radio tower.