I believe there will be spectacle! Eventually... First they need to learn to get the car to the end of the race. Like in early 1900's. It wasn't always the fastest car that won. Heck even in Le Mans series now, it's often not the fastest ones.
Once they get to feeling confident to push for more aggressive AI, then things start to get interesting. Don't forget, they still have to do their personal setup that works with their AI program. After all that, how do you cope with the track changing? It's the AI that has to work it out during the race. Tyres dropping off, rubber build up, rubble, ... ?
With a grid of 10+, do you go for a aggressive AI that might run out of grip in the last lap but tries to overtake aggressively? You build the AI to find non ideal lines to try the overtake, like humans do. To find a place were sacrificing a corner to get next to the other guy/car in front of you and blocking them from taking the ideal line. After the overtake it's back to buisiness about ideal laps.
With their being hardly any car to speak off. My guess is that drafting is not that good.
If i learned anything from F1 is that there might always be the prefered strategy which is the fastest one in theory. But after 1 lap can already be out the door. (example: a flat tyre after 20% of the race. New tyres mean that the AI has to push faster to catch up but it has newer tyres so it can. And still has to pass them) "The difference between theory and practice. Is that in theory there is no difference"
While there might not be a driver driving the car. There still is a team behind them. Who doesn't root for a racing team? Take Ferrari, it has massive fans. What if ferrari did a driverless racecar? What if they open up the cars in a couple seasons to develop them? Make them inhumanly fast?
And why? if you worked in a very big company you might have noticed how many driverless forklifts there already are. Or driverless trucks. Most severe trucking accidents happen because the driver is not paying attention to the road ahead and rear ending a traffic jam... I know it might take away jobs, but it will replace them with something else. Maybe not as many jobs but someone still has to build the AI and sensors for the trucks. And maintain them. Cheaper transport makes for cheaper goods. And you can make an AI run during the night only etc... An AI has no family it needs to see, or sleep. A road AI needs to be able to drive on the limit of grip, it needs to know what to do in case of an unexpected event. Tree falling on the highway, tyre blowout in front of you,...
ps: sorry guys, dang long post