The commenters on YouTube are idiots. One of the things that made me confident the guest was legit and not just making things up was that his comments on the taste of the various shapes and details on the cars correspond very much to the studies that have been done so far on taste synaesthesia -- the tastes he described were all things that he could/would have tasted in childhood such as pear drops, Marmite and rice pudding, as opposed to more refined "adult" tastes like wine, blue cheese or lobster, which are rarely encountered among taste synaesthetes.

Thanks for the link -- I really enjoyed watching it!