I thought it went very well. I was going in with high expectations and I was not disappointed. The Rivian rep gave me the key card and sent me on my way. I went mid-day so there was quite a bit of traffic Chicago area traffic so, I didn't go on the highway, but I took it on a few different...
I test drove an R2 yesterday. It was 95 and sunny when I drove and I was perfectly fine. I'm 6'5" so this was a big concern for me, but I was pleasantly surprised.