A smattering of key LCES cars through the years:
The Model 1, a successful premium GT. $320M profit
(Would have lost badly to @Killrob’s Model 1, though. What can I say, I suck at old cars 
)
The Model 8, a legendary wagon that was in production for over 20 years, and a bestseller for 15. $20B profit
The Model 13, LCES’s most famous and ubiquitous car. This minivan could be seen in nearly every household in the 2000s. $57B profit
The Model 18, the successor to the Model 13. A comfortable and popular family sedan. $20B profit
Also, LCES Corp may or may not have avoided several disasters with the help of save scumming 
(Big one was forgetting about the leaded fuel ban lol)