On my way home from work saw some lights travelling in the same direction as me. after looking closer it did not look like an aircraft because the lights were large and square/rectangular and flashing front, back then centre. not sure how big it was but i saw an aircraft in the sky when i was getting closer to home 20mins later and it gave me a reference, i would estimate that the object was 5 times longer than the plane. i tried to take a video as i was driving but the quality is poor, i had to turn away for a second and when i looked back it had gone?. not sure how to enquire about whether anything was tracked on radar or not so thought i'd post here as it was very unusual.