From "Key Decisions"
The stair car was one of the few remaining modes of transport available to the Bluth family, and was frequently driven by Michael Bluth. It was originally paired with the company jet, which was sold off to help deal with the company's financial woes. It had a large Bluth Company logo on the side.
It has lead a notorious existence, knocking down homecoming banners, ("Queen for a Day") helping inmates attempt to escape prison, ("Visiting Ours") and letting people sneak to upstairs windows. ("Shock and Aww")
Michael gave the stair car to George Michael when he debarked for college. ("Flight of the Phoenix") Maeby then traded it for Lucille Austero's yellow 1987 Cadillac Coupe DeVille. ("Señoritis") Lucille Austero then had the Austero Bluth Company logo painted on the side and used it in her Congressional campaign. ("Flight of the Phoenix") When Lucille 2 went missing Sally Sitwell had "Vote for Sitwell" painted on the side. ("Señoritis")
- Three different truck cabs were used over the filming of the series, all Ford F350s. A 1978 or '79 model, a mid-1980s model, and a 1967-72 model updated with a late '70s grille.
- The Bluth Company logos on the side and top of the stairs are inconsistent from episode to episode because of these changes.