Lyft Inc has acquired U.S.-based startup Halo Cars, which allows drivers to make money through digital advertisements displayed on top of their vehicles.

Lyft did not comment on the financing of the deal.

Halo Cars was founded in 2018 and has operations in U.S. markets such as New York and Chicago.

Lyft and larger rival Uber Technologies Inc. are pursuing different roads in search of profitability, with Uber pouring money into side businesses which have so far lost money and Lyft focusing solely on moving people around.

Lyft said earlier this month its active rider customer base in the fourth quarter grew to 22.9 million from 22.3 million the previous quarter.