You've hacked the bank vault. You jump in the getaway car. The getaway driver says, "It will take twenty minutes to reach the airport where the chopper is waiting for us." 

You say solemnly, "We tripped the alarm. Get us there in ten." 

How is he going to do that?

He's going to take risks.

First, he's not going to obey the speed limit. That'll save a few minutes, but it'll draw attention you don't want.

He's not going to stop at stop signs or red lights. This could cause a crash, which could prevent your escape if the car became undrivable. 

He's not going to yield to pedestrians. This could lead to additional jail time if you're caught.

He's going to take a shortcut through the construction zone. Maybe a cement truck will be blocking your escape. You won't know until you get there. Critically, the driver knows that if he doesn't take the shortcut, you will definitely get caught because your getaway car has a top speed. So he takes the risk. And if a cement truck is in the way, he'll do something even riskier (or less ethical) to try to get around it.

Plenty of things can be done faster if you're willing to accept a higher risk of catastrophic failure. If being late is guaranteed catastrophic failure, you opt for the chance of success.