WHAT IS SALARY CHEQUE? / UNCAPPED EARNING POTENTIAL ?
PAY CHEQUE, KNOWING AS A SALARY CHEQUE : The American English word for the slip of paper that authorizes your bank to make a payment is check, which is the adjusted spelling of the British English cheque. That word comes fromexchequer which is like a bank, and so a cheque is a note that has the seal of the bank: an official piece of paper. Cheque can be used as a verb meaning "withdraw."
UNCAPPED EARNING POTENTIAL : Tips are not commission. Commission is, as the first respondent said, a portion of what the passengers pay. If you were a salesperson, your commission would be a portion of what was paid for each item you sold. As a driver, your commission would be a portion of each of your passengers' ticket prices. If they tip you, that's separate.
It's not clear to me whether or not you'd still get hourly pay after 3 months. The way it's worded, it could mean that you start making commission on top of your hourly pay after 3 months (the "uncapped earnings potential" is based only on your commission, not on your hourly wage), or that you no longer get an hourly wage after 3 months, only commission. For the second to be legal, though, you would have to be able to reasonably expect that what you'd earn in commission would be at least as much as the minimum wage.
WHAT WILL IT BE?