My efficiency focused Accord can go from lawful driving to felony speeding in about five seconds. I'm not sure what that does for anyone but there you go.
And if your Accord had less "performance" it would be even more "efficiency focused." I once tested my CRV (which is an SUV built on a Accord chassis) by driving a tank of gas 300 miles across the Ohio and Pennsylvania Turnpikes, but keeping to the speed limit. I got 30 mpg. Usually I'd get 24-26 mpg driving on the highway, but not accelerating as much really made a difference. I've seen the ECU logs from test laps I've run for my work. You start revving up the engine and pouring on the torque, it really sucks up the fuel.
If consumers really wanted "performance" they'd be buying sports/sporty cars, which are one of the worst selling segments, instead of SUV's and crossovers, which are two of the best selling segments.
There's another psychological factor driving vehicle preferences. People seem to want nice big, intimidating vehicles. Whether it's because they want 'em big because they think they'd be safer in a crash or because they just want to project power isn't fully clear. Families like the minivans (another kind of crossover) because they want the space for the kids and stuff they haul. Sports cars are small and get mangled in a crash, they aren't that intimidating, and you can't haul many people or much luggage. What people seem to want is a big intimidating SUV that drives (or accelerates, at least) like a sports car. I've actually rented a bunch of them. Some of them are big, but fast, as I know from speeding tickets I got in Wisconsin and New Hampshire.
Those SUV's could get a lot better fuel economy if they decreased "performance," but, as the automakers told us, they believe their customers want "performance" -- whatever the vehicle type they choose. They also believe that "performance" and fuel economy are inversely related, at least for ICE vehicles. Thus, they get very nervous if EPA/NHTSA gets too aggressive about fuel economy/greenhouse gas standards. They've been forced to develop engineering workarounds that moderate that inverse relationship to some extent, so they're not totally opposed to the standards, but not if it really compromises "performance."
They're not spending billions on research to replace a low wage shuttle driver. I could see heavy manufacturing areas and port operations being a target though. The crown jewel is long haul trucking.
If they're not spending billions on research to replace a low wage shuttle driver, then they're also not spending billions to replace low wage drayage and long-haul truck drivers either. I'm not sure why they're spending the money to research this, but I seem to recall that the initial push for autonomous vehicles came out of Silicon Valley, not Detroit. Silicon Valley (i.e., the software and computer industry) really doesn't understand the auto market. I think maybe they got into it because it's just a "cool" software challenge and it's sort of science-fictiony. Think Elon Musk and his Hyperloop. It's the auto industry equivalent of gadgetbahnen.