Waymo vehicles prank riders with April Fools' Day gas stop joke
• Waymo vehicles made an April Fools' day joke, with the robotic voice pretending it had to stop for gas before saying "Just kidding, I'm all electric."
• Waymo uses electric Jaguar I-PACE SUVs for its robotaxi fleet, having ordered 20,000 in 2018.
• The joke shocked but amused people in San Francisco's tech community.
• Google used to be known for big April Fools' day pranks, but has toned them down recently.
• It's unclear if this was an official Waymo prank or the vehicle going rogue.