Ignore them.
People say that about my car but only jokingly. Seeing as I'm the second most heavily modified car at my school (second only because one guy has airbags on his sentra), they can't say too much. You can always place a friendly wager on a race,,, if they're so sure they can beat you, then you can take their money (if you're sure you can beat them). Though that broke down rx7 may be tough to beat.
