Vipers are a further continuance of Carroll Shelby's formula of the biggest possible engine in the smallest possible car. That is what gives you the exuberance of speed.
Viper interiors are designed like the cockpit of a fighter jet. All the needed controlls (except for being able to close the doors : > ) are designed to be still reached while buckled in with a 6 point harness. This makes things pretty intimate, but it is designed so the interior pretty much disappears when out on the track. Little distractions.
Many people do not know just how small Vipers really are. They are smaller in length to a Porsche 911 turbo.
Few owners complain about the close quarters, as the driving experience is so involving they have little need for extra width.
Owners note that the entire roof is not raised up for headroom, just the area right above the driver and passenger is raised to allow the use of a helmet. The classic racing Gurney (tall guy) bubble.