He lost his leg in a motorcycle accident after high school, but it did not affect his race car driving career.

[3] Niday is one of three drivers to have participated in the Indianapolis 500 with a prosthetic leg, along with Al Miller and Bill Schindler.

Drivers competing at Indy during those years were credited with World Championship points and participation.

In 1948, Niday won the 3rd running of the Australian Speedcar Grand Prix at the famous Sydney Showground Speedway.

He died from a heart attack after being thrown from a vintage open-wheeler at Willow Springs raceway.