It is in Burbank CA, close to NBC. When he was doing the Tonight Show he would come out to greet the audience in his denim shirt and jeans with usually one or two big grease stains having just come over from the shop. It is a pretty amazing place, they do almost everything in house, and the cars get driven. He's a good guy, very knowledgeable on cars and loves to work on them. If I had his money my collection would be very similar.
Ian
1977 TVR 2500M
1963 Land Rover 109