For one thing, the white of a traditional space-suit would pick up too much dirt from the train or the bus. For another thing, you can distinguish it from an actual space-suit by the words "I'm in my car." prominently displayed front and back.
In other respects, though, this Virtual Reality device
does look a little like a space suit. We're talking quite lo-tech virtual reality. You have the big space-suit visor to remind you of tinted car windows. The temperature control works by controlling the actual temperature inside the suit, not by feeding pseudo-temperature feelings to your nerve-endings.
The breathing apparatus enables you to screen out the smell of your fellow-citizens, and that of last night's beer, as recycled through their bladders.
You become very deaf to requests for spare change.
The most obviously car-ish part comes when the motion-detectors in the suit detect that you've sped up, and pipe a satisfying engine-roar into your ears, or a screech when you corner sharply. When stuck in human traffic, you can lovingly polish the car-maker's logo, attached to the suit where the breast-pocket would be, if space-suits had breast-pockets.
Your road-rage becomes hilarious.
Your roller-skates gain a new lease of life.
TODO: not yet sure how you will drink your coffee, pick your nose, or have sex in the back seat.