Why do cars stall?
There are many reasons why a car may stall such as, water in the fuel, fuel pump failure, dirty fuel filter, in need of a tune up or a large vacuum leak to name a few.
If you have vacuum activated power brakes (big diaphragm) and you have a leak, this will cause 2 different symptoms. Some cars will notice a raise in the idle, and some cars will stall when you hit the brakes. Check the hose that is connected from the intake manifold to the power booster diaphragm for cracks.... Heat dries out hoses and plastic....and oil rots hoses that aren't designed to handle oil.
Stall? once you get into a stall like a tail stall for example on a halfpipe you can stall all day long until you get tired stalling is really easy i don't think there is a record for the longest stall. They are just like standing on the ground once you have your in the stall. There are records for the longest grind try looking for that.