OMG
the Eee are coming!!
I've heard some simillar stories and most of them had a logical explanation. Maybe one of them could suit here... Was there a road climbing up and down hills near the coast? was it a litle cloudy? Sometimes, the lights of the cars reflexes on the clouds, and if the car heads a little up or down, the shinig spot seems to moove very fast
.
Anyway, the truth is out there