Goveck has 4 bikes, mainly a
light version of $4000 that goes 15-27MPH,
medium with Li Ion battery for $5000 goes 15-27MPH,
and a heavy one for $8000 that goes 60MPH.
and a carrier design.
They're quite expensive indeed.
Emco has a good 5 types of bikes,all kinds of styles.
If you ask me they're better than the Xtreme bikes.