With people towing into Vegas w/race equipment from well below freezing areas of the country, I can see someone coming in w/anti freeze in their equipment, but am a little surprised tech didn't make a point of checking that everyone had it drained out before getting out on the track, especially w/so few cars there
....Anti-freeze anywhere down on the track can be a killer....I've seen it happen and am sure many others here have as well. WJ