To me that's not a test drive - that's a ride. I want to see how a car drives from the driver's seat. I've excluded vehicles on handling dynamics (too floaty for my tastes or too hard for pothole season), throttle/responsiveness, outward visibility, comfort, roominess/head room, as well as other things. For first timers driving an EV with regen it's a different experience - not to everyone's taste either. To me, that's the purpose of a test drive. As more competition comes to market, it's asking a lot of a potential customer to take a leap of faith (and hassle) to purchase a car before trying it. You might not be able to get a test drive in exactly the car you're aiming for, but you might also get a different perspective depending upon how a test car is optioned out.
I'm sure many of the folks who have sat in my car also did a test drive later before purchasing. It's still a worthwhile introduction though because most of the times they were where I was because of some event. At some events there were people lined up, so I had signs made to answer basic questions and give people something to do while waiting.