Driving down interstate. Started making a sound like a leaf caught in the cabin fan. Next thing I saw was a puff of white/blue smoke in the mirror which turned out to be the freon. No warning light, nothing. Freon is a lubricant in these but apparently, the compressors sieze up sometimes. No indication of this before hand. I think the smoke out the back was my $1700. No of course the timing belt is due and the brakes are worn. Would sell it if I could....