It is not easy to get accurate info of the founders of the Cushman Scooter company.

 Everett B Cushman and Clinton Cushman founded the company in 1901, they were cousins.

In 1919, Everett was out, and that is about all there is to easily find about the co-founder of the Cushman company, whose scooter won 4 Army/Navy "E"s in the Navy in WW2 https://usautoindustryworldwartwo.com/cushman.htm

He married Florence Judd, his parents were Joseph Warren Cushman and his mom was Ruth E Bruce

He was born in Champaign Illinois in 1878, he died in Huntington Beach Calif. in 1963

His direct ancestor was on the Mayflower, as were other Cushmans, and they came from England. They went from Plymouth to Vermont to Illinois, and his great grand dad was in the Massachusetts Militia in the revolutionary war

https://www.ancestry.com/family-tree/person/tree/76123388/person/162601912049/facts http://www.osagcd.com/cushmanclinton.html 

https://www.farmcollector.com/gas-engines/gas-engines-company-history/cushman-motor-co-zm0z16augzhur/

https://www.thesahb.com/snapshot-198-1945-cushman-30-series-scooter/

Since the info before the Atlantic crossing isn't easy to get, I can only see that my ancestors, the Cushmans, and Everett's ancestors, were both from England