That will set a precedent on Segway use and decide if the 1500-watt machines are suitable for footpaths, roads or private property.
Summers, who suffered a permanent injury when he was run over by a motor home in Florida in 1981, said he chose the upright machine because they were light and he could "go anywhere on it".
"I bought it when I had a knee replacement. The other leg has a lot of metal in it from my accident so they cause me a lot of discomfort and difficulty walking," Summers said.
Segway NZ director Philip Bendall said the machines were perfect as mobility scooters because they allowed people to stand, which was healthier, and look other pedestrians in the eye.
Jack Liu, of Sal's Pizza, said the company leased two Segways and had delivered pizza on them for two years.
"We are waiting to see what happens with the court case," Liu said. "At the moment we ride them on the footpath by the road but away from the pedestrians. "