The combined El Dorado National became one of the light-duty and mid-size buses for the airport/hotel/rental car shuttle bus markets and local transit operators with smaller fleets.

[2][3] By 1964, the Honorbuilt Trailer Manufacturing Co. was producing the most popular pickup truck camper bed insert in the United States, branded as the "El Dorado coach".

[7] Stewart bought out the last of his partners in 1978 and incorporated as El Dorado R.V., Inc.;[2][8] the company subsequently entered the commercial bus market in 1979 or 1980, offering cutaway minibuses under the "Falcon" brand.

[2] ElDorado Motors lost $5 million in 1988 due to decreased demand for recreational vehicles and sold its commercial bus operations to Thor Industries in 1988 to stave off bankruptcy.

[20][21] The RV firm, renamed to SMC Midwest as a wholly owned subsidiary, ceased operations in 1997, although it still existed as a legal entity.