I usually keep two at a time as well. I keep cars for a long time though.

91 Toyota Pickup (first car got at 14, still have it)
86 Accord (daily driver, had it for little over year and a half)
91 Toyota Camry (bought it then scrapped)
78 Yota pickup (owned it for 5 hours then scrapped it) -it was a shell
86 Toyota mr2 #1 - sold to a guy on here
86 Toyota mr2 #2 still have it - its for sale
87 Toyota mr2 #2 " " " " '' ''
87 Nissan Pickup (funest automatic truck evar lol) - sold
89 Honda Accord - obught it as a running parts car, got what i needed and scrapped it.