This is a question for the 450 Owners: What do you do for flat tires? Heaven forbid you should have one! Are you carrying a can of aerosol tire inflator? Or are you using the breakdown kit Smart supplies? The aerosol can has freaky warnings not to carry in the passenger compartment. (I have not found the trunk on the smart yet. And not in hot weather due to risk of explosion. The Green Car Company, in Seattle, WA, says they supply only the aerosol. I guess they have not had any explosions yet. What are the rest of you grey smart owners doing? Would a bicycle pump work? Thanks for the assistance.