South Florida is the latest testing ground for a new Lyft partnership aimed at snagging market share from Uber.

Starting this week, three Pep Boys stores throughout Miami will double as rental-car pitstops for eligible Lyft drivers. The program is a collaboration between Lyft, the second largest ridesharing company in the U.S. in terms of market share, and Hertz, one of the three biggest rental car companies in the country.

The Express Drive program, available in 39 Florida cities, offers discounted…