radio setup question

yellowdartdave said
Compact Cassettes were available in 1972 !!! :blob:

http://www.hamtramck-historical.com/images/dealerships/DealershipDataBook/1972/72_Barracuda_9.jpg

Thanks the info I found said they switched in 72 with a radio cassette unit in one.So it was available in 72,I tell ya that is one crazy looking device.I don't think it works tho.maybe just not hooked up as the radio wasn't being used.