First, the standard Google Street View Car:
Second, as most people already known, people call this tricycle-like apparatus the “Google-Trike”.
No, it is not some kind of joke, it looks like a joke but it’s not, Trike already working in many places, you can refer to Official Google Blog:
And the last, the Google Street Walker, you can call it “Google-Walker”, it looks more… Original.
I would like to suggest Google try to combine Trike and Walker with Segway.