The Ellicott City resident, who earlier had lived in Laurel, was 78.
"He was a page for Speaker of the House Sam Rayburn," said a daughter, Mary Catherine Bishop of Ellicott City.
Mr. Bell served with the Army Corps of Engineers during the Korean War, attaining the rank of sergeant. He later earned degrees in business and architecture from the University of Virginia.
In 1956, Mr. Bell was a young management trainee at Ford Motor Co. working for Lee Iacocca, who was then a district manager and later became president of Ford.
Tiring of the corporate culture, in 1962, Mr. Bell joined with Thomas E. Lynch, a fellow trainee, and with a combined $133,000 they purchased Academy Garage in Laurel, which they renamed Academy Ford, and went into business selling Fords.
They expanded the business in 1979 when they purchased Schulte Ford on Ritchie Highway in Glen Burnie. After they amicably parted ways in 1982, Mr. Lynch took ownership of Academy Ford, and Mr. Bell took over the Glen Burnie operation, which became Bob Bell Ford.
Mr. Bell purchased Legum Chevrolet/Nissan on Eastern Avenue for $11.5 million in 1989, one of the largest Chevy dealerships in the nation, which propelled him overnight to be Maryland's largest automotive dealer at the time.
With expansion came a new name — Bob Bell Automotive Group — which at his death included seven franchises with dealerships in Baltimore, Glen Burnie, Bel Air and Essex that sold Fords, Hyundais, Kias, Chevys and Nissans.
Mr. Bell was best known for his appearances in TV ads for his dealerships, dressed in a pink or black tuxedo, wearing sunglasses and playing a piano.
"On camera, Mr. Bell is soft-spoken and sincere — a sharp contrast to the widespread image of the white-shoed and white-belted, promise-the-moon-and-stars dealer," said a 1989 Baltimore Sun profile. "In person, he's more casual, working in shirt-sleeves. … A hint of a Southern drawl seeps into his conversation."
"He didn't play the piano but made it look like he was playing," said Ms. Bishop, who added that her father collaborated with his ad agency in creating many of the dealership's ads.
The commercials often featured snappy jingles such as "Keep those clunkers rolling, rolling, rolling to Bob Bell," "It's always right at Bob Bell," or "There's a whole lot of shaking going on at Bob Bell Ford."
"He was an extremely personable and charismatic man. He was down-to-earth," said J.P. Bishop, his son-in-law, who is president of Bob Bell Auto Group. "To him, a handshake mattered, which in today's world was a throwback. That's the way he did business. Today, it's all lawyers."
Mr. Bishop, who has worked for Mr. Bell for 20 years, said he had an outgoing personality.
"He loved talking to people. He liked matching up what they needed to what he had," said Mr. Bishop.
Mr. Bishop said he enjoyed spending a 10-day winter holiday in Florida before returning to work.
"He'd come back energized and he personally sold 10 cars a month. He just didn't sit in the office and loved getting out on the floor selling," he said.