Too flashy and funky. I can't really think of a car analogy; they're either not quite technically advanced enough, or as stylish/restrained. Lexus would almost do it, but they're too beige. RX8 is too much of a mashup of styles. Maybe the Cadillac 16, but I seriously doubt it is stable.
I'd maybe go with VW Phaeton. Astonishingly capable, but they're very understated and consistent.
I think Linux users probably enjoy the whole 'bitsa' nature of things. I like to tinker with it, but I never got it to behave on a PC - obscure SCSI and sound drivers for my Dell at the time. I had to settle for a Playstation 2 kit ;)
Richard