When Terence Hermiston thinks of his 1982 Volkswagen Vanagon, he recalls the hundreds of hours and thousands of dollars he spent rebuilding the cream-yellow jalopy during the pandemic. He harks back to his return to Canada and the U.S. after years abroad, and the feeling of adventure it rekindled as he rattled up and down the coast with his wife and young son in his “sailboat on wheels.” Produced for the U.S. market from the late 1970s to the early 1990s, Vanagons — the name evoking the room of a van and the feel of a station wagon — have...