I AGREE with Brian Bruce that a full-scale tramway for Grantham is impracticable and unaffordable. I have driven in Sheffield and full-size trams scare the living daylights out of me.
A narrow-gauge tramway is what I proposed; it is no more difficult to drive past a stationary narrow-gauge tram taking on passengers than an inconsiderately-parked SUV. Perhaps we could have more of the former and less of the latter.
I suggest that Grantham Trams (or Grantrams for short) would use 21st Century battery technology. They would need only rails, not unsightly overhead wiring. In this, they would differ from Nottingham or Sheffield trams, which are using 19th Century technology.
Fairly soon, those who can afford them will all drive hybrids or electric vehicles. These differ from Grantrams only in that they are very expensive, and use tyre on tarmac.