Self-driving startup Argo AI said it had launched driverless vehicles in Miami and Austin for in-house testing, with commercial applications following later.

A hack effective on the popular S and Y Tesla cars would allow a thief to unlock a vehicle, start the motor and speed away, according to Sultan Qasim Khan, principal security consultant at security firm NCC Group.

Uber announced one food delivery service using autonomous cars, and a separate pilot using sidewalk robots. Both services are available to Uber Eats users in Santa Monica and West Hollywood.

Demand for zero-emission trucks is growing, but charging times, range anxiety, insufficient infrastructure and high costs stand in the way of fast adoption.