Matsushita started his career racing motorcycles in his home country between 1977 and 1979, before making the switch to four wheels. With Panasonic's backing, he then moved to the United States and entered his first Formula Ford race in 1986. He finished second at the 24 Hours of Daytona and third at the Sebring 12 Hours in 1988. Matsushita began to make his name known by winning 1989 Toyota Atlantic championship (Pacific division) with the largest point margin of all time.