Customers who book a robotaxi to select LA transit stations can get a $3 credit that can be applied to future Waymo rides. The promotion will run February 4-April 1, and is specifically geared toward helping LA residents get to LAX via bus. (Waymo still isn’t making airport runs in LA, nor does it operate on the freeways — yet.) Waymo says the promotion will help it learn how customers use (or don’t use) its self-driving cars as first- and last-mile options for public transportation. But some experts worry that autonomous vehicles will siphon riders from transit, which could lead to service cuts.