Baffling!!I was driving along the A477 towards Carmarthen from Tenby (South Wales), when i noticed a cigar shaped craft flying about the height of the clouds from my left travelling to my right.. the size and shape baffled me so I kept watching waiting to see the craft turn and be able to see its wings (thinking it was a plane) it was pure white with no markings and approx I would guess about 30 feet long. Within seconds a second third fourth craft appeared following the first craft in a line… I lost count after 15 as several more appeared alongside the line of craft and looked like they were rocking from side to side. The craft appeared from nowhere and made no sound..I had my vehicles window open and heard only the few cars in front of me. I didn't see any wings and all the craft were pure white in colour. They travelled pretty quickly faster than watching a plane pass you by and they then turned towards the direction I was heading (Carmarthen) and one by one vanished out of sight. I couldn't get a picture due to me driving and my phone was in my pocket! I'm gutted I didn't capture this on film I've never seen anything like it.