haha, i had the same thing once but a little different, i used to have a ford fairmont, and was munging down the highway at like 140 with both front windows down and this huge spider crawled out from behind the dash up the windscreen and stopped like right above where if he fell he would land on my lap, and just chilled there, and im like god damn it, freaky shit walking on glass with wind bellowing in, i pulled over up the road and grabbed him and threw him out. had like convulsing shivers for like 30 seconds.