Not much kept David Johnson down.
When he was 77, the Polaris Industries co-founder and creator of the company's first snowmobile, hopped aboard a modern version and gunned it 900 miles across Alaska.
Until recently, the inventor of the Polaris snowmobile was a regular fixture at the company's Roseau, Minn., plant, despite retiring in 1988. He would check in on the next generation of the machines he had nurtured. He would also give tours and share stories about company history.
That first snowmobile — powered by a 10-horsepower lawn mower engine — spurred a company that today generates $4.7 billion in revenue and manufactures all-terrain four-wheelers, motorcycles and modern-day snowmobiles with more than 100 horsepower.
On Saturday, Johnson died in his Roseau home after a long illness. He was 93.
Johnson, the youngest of five children, was born Feb. 5, 1923, on a Malung Township farm in Roseau County in northwestern Minnesota. His mother died in childbirth, and he was raised by the Swedish farm owners Betty and Peter Hetteen and two of their eight children, Elsie and Albert.
Growing up among adults in farm country, Johnson was given free rein to explore and fish, and he was taught to build just about anything, said son Mitchell. "His adopted mom and dad were Swedish immigrants, and they built and designed all the things they needed." He didn't learn to speak English until the second grade.
Johnson became fast friends with the Hetteens' grandchildren, Edgar and Allan. Those friendships would span decades and various businesses. The men later became brothers-in-law through marriage, but were really family early on. As a kid, when Johnson's biological father and his new wife tried to visit, Johnson would hide for hours, fearing that his father would take him from the Hetteens, his son said.