Robert Plath seeded his Rollaboard with airline crews to win trust

In 1970, Bernard Sadow patented the first wheeled suitcase — four caster wheels bolted to the bottom of a horizontal case, towed by a strap — and even after Macy's agreed to stock it that October, the design never caught on with the traveling public. Sadow's model tipped over easily and dragged awkwardly on its side, and early department-store buyers had also worried aloud that a wheeled bag read as unmanly, assuming husbands would rather carry a wife's bags than be seen pulling one on wheels.

For the next 17 years, wheeled luggage remained a minor novelty rather than a real product category. Building a better set of wheels or a stronger patent wouldn't have solved the actual problem: the traveling public needed to see the design used by someone whose judgment they already trusted, in exactly the setting where luggage mattered most, before they would consider switching themselves.

In 1987, Northwest Airlines pilot Robert Plath built a case in his Boca Raton garage that stood upright on two wheels with a telescoping handle, rather than lying flat on four, sized to move easily through narrow aircraft aisles and fit overhead bins. Instead of taking it to retailers, Plath made his 'Rollaboard' for his fellow pilots and flight attendants first, the one group of people who spent more time in airport terminals than anyone else and whose competence the public already implicitly trusted.

Seeded the Rollaboard with airline crews, so travelers saw trusted professionals using it daily and asked for it, making ads and store displays unnecessary.

Travelers saw uniformed crews using the bags daily, transferring trust.

Crews' visible use made the design credible without ads or store displays.

Repeated exposure in airports turned passive observers into active buyers.

Organic demand from travelers outpaced garage supply, proving the mechanism.

When a better product stalls, seed it with the group your target already trusts in that setting, not the easiest customer.

Travelers who saw uniformed flight crews striding confidently through terminals pulling the new upright cases began asking where to buy one, driving demand Plath couldn't meet from his garage; he founded Travelpro to supply airline crews directly, then expanded into retail in the mid-1990s. By 1994, Travelpro ranked among Inc. Magazine's fastest-growing private companies as carry-on-only travel became mainstream, and the design was widely imitated across the luggage industry from around 1993 onward. Plath sold the company in 1999.