Ford panther platform, Buick with a 3800 motor, a Honda or Toyota from the 2000's be able to pay cash and have an extra $500 to gamble every month.
pretty much any 3800 - V6 Accord or pre 2011 Camry - I have seen these cars be abused to no end and survive - plus parts are plentiful and cheap.
Crown Vic is on another level of reliable - routinely see 350k on service vehicles.
BTW - where are you seeing $500 car payments ? $750 is the new average I think - seriously - it is stupid how much cars went up the last 2 years.
Bought my truck in 2021 - had extra money, always wanted one so I paid 53k for it and immediately thought I made a mistake (had to order from a dealer who had an allocation from Toyota). 3 years later - only 8k miles on the odometer and thought of selling possibly - Carvana was at 51k with their offer. Granted it’s low miles - but 2k in depreciation in 3 years is unreal - but that’s how much cars have increased in value. Only regret was not buying in 2020 immediately as lockdown lifted - I turned down a 2018 at that time with 17k miles on it for 30k - I offered 28900 thinking we would just meet in the middle at 29500 - but dealer wouldn’t budge off of 29800. I likely could have resold for a profit even today.