Pop your tire in a new car and you might have to hitch home. pspechtenhauser/Flickr hide caption itoggle caption pspechtenhauser/Flickr Blog Of The Nation Got A Flat Tire? Tough Luck. June 21, 2011 Thinking about buying a new, reasonably-priced automobile? Check the trunk, first. There might not be a spare tire in there. Some carmakers are forgoing them to cut costs and increase miles per gallon.