There would still be incentive to drive faster. Given that the service has a fixed income side, the only way to optimize its profitability is getting the expens

There would still be incentive to drive faster. Given that the service has a fixed income side, the only way to optimize its profitability is getting the expense side down. Driving faster to make more tours with less cars is the most obvious way to do this, therefore drivers will be incentivized to go faster.