At Penzer's used car lot his employees are watching a basketball game between Memphis and Boston. When Penzer turns off the game, one of the employees complains that it's playoffs, however the Grizzlies and Celtics are in separate conferences and the only way they could play each other after the regular season had ended is in an NBA Final, which they never have.
When Elliot is delivering the load of cars, they say "Hand over the keys." Then when the alarms go off, Pinzer uses the keys to disarm the alarms. The cars were boosted, so there never should have been any keys.