This modern and energetic name is well suited to a transport, travel or automotive brand.
The name "SegwayCity" has 10 characters and four syllables. Established brands using four syllable names include Airbnb, Coca-Cola and ESPN.
Segwaycity.com is a .com domain. Dot com domains are the most valuable top-level-domain in the world, famously used by websites like google.com. Once secured, a .com all but guarantees no-one else can outrank you for your own name in the long run.