we've all done it, even i (co-owner of the vintagemobile) had to be corrected. the name of our store is slightly difficult to pronounce.
although it has the word mobile (like mobile phone, exxon mobile, mobile, alabama) it is not pronounced like that word.
please practice saying "the batmobile"
once you have said that, just replace the "bat" with "vintage" and you will be all set!