Women have the potential to transform transportation in Saudi Arabia, from the types of vehicles sold to how cars are driven, when the government lets them start driving next summer.

The market currently is dominated by Toyota Motor Corp. and Hyundai Motor Co., selling sport utility vehicles that are big enough to haul around the whole family. There probably will be an uptick in sales of smaller models now that spouses will have more flexibility getting around.

Companies hurt by the government's announcement Tuesday that it will liberalize its driver's license law starting in June could include Uber Technologies Inc., which women have had to rely on along with hired drivers.