Mine would be the DeLorean from the Back to the Future trilogy. Oh, I know it's very limited in some ways; that you have to fuel it and that it has to be going 88 miles an hour to get when you're going ... but it has style.
Nothing against police call boxes that are bigger on the inside than they are on the outside, or Victorian armchairs with spinning dials and flashing lights, or op-art tunnels buried beneath the desert, or even starships slingshotting around the sun (or cold-mixing antimatter with matter, or sending folks through glowing Guardian portals).
I just like the DeLorean. I like the Mr. Fusion power plant on the trunk. I like the ice that forms on it due to energy loss. I like the flashing blue body lights and sparks it generates.
Now that you've picked your time machine, tell me why.
Then tell me what you'd do with it.
Tell me the ONE moment you would go back to in human history and erase. (Because, as Dr. Brown intimates, the future is unwritten.)
What event would you "unwrite?"
I have my nomination in mind - and I'll share it later - but first, I'd like to know yours.