When Max is showing Dave the teddy bear cam footage, they are standing in Dave's food truck. Dave doesn't quit his office job and get his truck until episode 6 "Dave of the Dead". This is because ABC aired the season out of order.
Around the 13:10 mark, Dave and Max walk into the apartment. Dave can clearly be seen wearing his "Steak Me Home Tonight" T-shirt, referencing his food truck business. However, he didn't actually come up with the idea for that business until the end of Season 1, Episode 7. This is because ABC aired the season out of order.