There's a guy around here who lives at the top of Anaheim hills that has a garage that could keep up with if not top those.
I've only been there once, his name is Gerald Barnes. he has a really nice blue fuel injected 906E that won at the Palos Verde concourse and Porsche parade, a Bugatti Veyron, an enzo, etc.
He can park close to 100 cars on his driveway.
This is one of his cars at the cars and coffee meet:
and here's another:
IIRC, he also had a 427 cobra, a couple three rare 356s, several other porsches, a couple of ferraris including a nice daytona spyder, a 1923 mercedes limo, and a few muscle cars.
His $100k mercedes was parked outside
IIRC he owns Ferrari Maserati Southern California.