The same 2005 gray Toyota Corolla CE appears in every episode of Numb3rs.
This original version of the pilot episode had the events take place in Boston and at MIT in Cambridge, MA instead of L.A. and CalTech in Pasadena, CA.
In this original version of the pilot, the FBI boss was female and had a much larger role. The character of Terry was a much smaller role, while Don's partner was a man. The surname of the three protagonists in this version of the pilot was Emrick, not Eppes.
The only actors in both versions of the pilot were David Krumholtz, Peter MacNicol, Alimi Ballard and Navi Rawat.