Let's carpool, it'll be much more efficient.
If you carpool in a taxi, you can split the fare.
The family usually takes a carpool to the grandparents house; it saves on gas and gives the cousins a chance to catch up.
Using the minivan to carpool to the game was a brilliant idea, Carol!
Roger and I plan to carpool for the next three months, to save on gas costs.
Thank goodness, they're finally putting in carpool lanes on the local highway.
We decided to use the church van to carpool to the camp.
We're riding to work together tomorrow, a carpool, if you will.
One benefit of carpooling is bypassing the traffic by using the carpool lane.
Lily promised to pick up John in the morning for their carpool.