You can deliver pizza in a worn-out old car. 'Duper has standards for their vehicles.
The taxi company I drove for also lobbied to force 'duper's vehicles to be inspected by mechanics... Semi-annually, iirc.
Edit: the inspections were probably mandated every 3 months (quarterly); the taxi company inspected its version of ride-share vehicles bi-monthly (iirc), which just cost their drivers time (because the mechanics were already employed by the taxi company), whereas an inspection was another cost for 'duper drivers.
The taxi company I drove for also lobbied to force 'duper's vehicles to be inspected by mechanics... Semi-annually, iirc.
Edit: the inspections were probably mandated every 3 months (quarterly); the taxi company inspected its version of ride-share vehicles bi-monthly (iirc), which just cost their drivers time (because the mechanics were already employed by the taxi company), whereas an inspection was another cost for 'duper drivers.