Mercer Automobile Company was founded in 1909 at Trenton, Mercer County, New Jersey by a handful members of the prominent Roebling and Kuser families. Ferdinand Roebling, son of John A. Roebling, famous designer of the Brooklyn Bridge, was the president, and his nephew Washington A. Roebling II was the general manager. The secretary-treasurer was John L. Kuser, who, with his brothers Frederick and Anthony, had amassed a fortune from banking, bottling and brewing. The founders’ focus on the competition resulted in 35R Raceabout racing car. Its inline 4-cylinder T-head engine displaced 293 cubic inches (4,800 cc) and delivered 58 hp at 1700 rpm, in racing trim 85 hp at 2500 rpm. The Mercer Raceabout raced at various AAA events in 1910-1912 seasons. In the 1911 two yellow Mercers driven by Charles Bigelow and Hughie Hughes were entered for the inaugural Indianapolis 500 miles race. Hughes finished twelfth, Bigelow was flagged and classified 15th. During the 1911 season “Lord” Hughue Hughes, who was born in 1886 in London, used to carry a toy monkey in his car so his mount became known as the “Monk”. In August 1911 Hughes won the Kane County Trophy Race at Elgin, and also finished third in the 600-inch Elgin National Trophy. In October Hughie took the Fairmount Park race in 231-300 ci class, and was sixth overall, and in November he won the Savannah Trophy. Hughes was killed in an accident on 2 December 1916 at Uniontown Speedway in Uniontown, Pennsylvania.
| Season | Series | Event |
| 1911 | AAA | Indianapolis 500 |
| Driver | No. | Entrant |
| Hughie Hughes | 36 | Mercer Motors |
| Scale | Manufacturer | Collection |
| 1:43 | Brian Phipps | |
| Cat. No. | Quality | Rarity |
| 
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