I booked a large car for rental a few years ago and ended with one of these. I was so mad to get a small car when I booked a larger car. Although I got compensation, I still prefer to get what I had booked. I admit that I drive slower in the rain. lol
For me a lot of it just depends on how hard it is raining. There are times it is coming down so hard that visibility is bad and I can understand that. Still though, getting by the big truck quicker will help your view. They claimed this car was actually an upgrade, but I think it was just a bunch of smoke and BS.