Ok, special thanks to my Pop for sending me this last night. It took me till 1:20 before I bought three. I found a store with some still available. eMail me and I’ll pass you the link.
It’s called The Soundracer. Plug it into your car stereo, and it makes your boring family car sound - and even somehow feel - like a roaring V8. I can’t wait to turn our wagon into a lambo.