Generally, yes, you can use Kurviger for different vehicles. Typically, we see cabrio, roadster, or in general drivers that prefer rural back-roads over busy highways. Kurviger is also used by racing bike riders to plan challenging routes with ease.
A lot of the benefits that work well motorcycles are also true for other modes of travel. Avoid cities, highways, and traffic, while being routed along scenic routes is a lot more relaxing compared to a regular fastest route routing.
Feel free to give it a try.