Does this cart come with dividers or compartments already set up?

The cart arrives assembled with internal compartmentation. Interior layout is fixed — plan your brush and tool storage accordingly before first use.

Will the wheels lock to keep it stationary while I'm working?

Locking mechanism is not specified in the product specs. Test the wheels and brakes after delivery to confirm hold-down capability, especially on sloped floors.

Can I use this outdoors or does it need to stay in the garage?

Hard panel construction handles light outdoor use, but prolonged sun exposure will degrade the finish over time. Store in a garage or covered area between detailing sessions for longest life.