When Lauren opens another successful business that intervenes with 0-60, it's up to Baby Steve to take the wheel; the sibling rivalry is on.

Lauren and Baby Steve learn that owning a driving school was never Stevie's dream; Stevie suggests Lauren open her own business within 0-60.

Lauren's new business is thriving in 0-60, so Stevie must make other arrangements to teach his class.

It's Drunk Driving Day at 0-60; students complete sobriety tests and Kassie has a surprise for Baby Steve.

Things come to a boiling point for Lauren when Stevie again needs backup, but it comes at her expense.

Stevie wants to hand over the wheel to his driving school, but the announcement doesn't go quite as he hoped.