Never though about it that way.
Let's see... My Ruby would be like a MB S350 BlueTEC. Green (no emissions) fast, but smooth ride.
My beater Fuji alu frame built up for commuting would be like an old Toyota Starlet. Not fast, crappy ride, but it gets there.
The Spec S-Works Safire...not sure. Maybe a well equipped Land Rover. Great suspension and very capable off-road, while remaining classy.
And the Giant Anthem, probably a Toyota 4 Runner. Not quite the Land Rover, but it works well.
What I drive? a 2002 Toyota 4x4 v8 Tundra. Really not like my bikes, but closer to the MTBs than the road bike. Hard to believe I've had it almost 10 years. Great truck. Like my bikes, it takes me places cars don't go. I've 4x'd in 9 states west of the Mississippi. Seen wonderful places off the 'beaten track'. I've camped and slept in the back (has a shell) squeezed next to my bike. I actually bought it so I could transport my bikes on vacation and carry camping gear.
Tzvia- rollin' slow...
Specialized Ruby Expert/mens Bontrager Inform RXL
Specialized SWorks Safire/mens Bontrager Inform RL
Giant Anthem-W XT-XTR/mens Bontrager Inform RXL
Fuji Newest 3 commuter/mens Bontrager Inform RL
Novara E.T.A commuter/mens Bontrager Inform RL