Resurrecting Al Unser’s very first asphalt Indy car and the first car he drove at Indianapolis Motor Speedway.

It’s fifty years since Jim Clark’s Lotus dominated the 49th Indianapolis 500-Mile Race. It was the zenith of a whirlwind ride for the Scot and mentor Colin Chapman at the Brickyard. A wispy little sheep farmer with a flimsy car painted green and its engine in the wrong place. Jim...