Can I just go back to Ants point...
As far as I am aware you cannot eat in a car, you can however consume a drink. I would like to make comparisons to say a business man dropping a sandwich on his lap, to that of a lit fag, or the end of the fag falling out... How many cars have you seen with "blim holes" in the seats from previous owners.
Surely this is a risk in its own right?