Gas mileage of the ZL1 as a con? My '67 Olds 442 gets
8 mpg on the highway and it handles like 1960's boat technology.
Visability, I get stopped by folks wanting to talk or take pictures all the time.
Oh you're talking about visibility from inside the car not an issue that I've had, even with the top up (rarely).
You haven't bought it yet? Why are you reading about it? Buy it, drive it.