Joby Aviation Inc. said it plans to buy the helicopter rideshare business of Blade Air Mobility Inc. for as much as $125 million in stock or cash as the electric aviation firm seeks to expand its battery-powered air taxis into a ready-made market for its aircraft.

Joby, which develops electric air taxis, will purchase the Blade brand and Blade’s passenger air-taxi business using stock or cash. Under the deal, Blade’s passenger business will operate as a wholly-owned subsidiary of Joby led by Blade CEO Rob Wiesenthal and continue operations as normal.