Marathon Music Works
The Pink Elephant
I don't want to tilt the scales here or anything, but I'll just say this: One of the above names, to me, sounds like a NASCAR event space, one reminds me of a statue at a car dealership on Charlotte Pike, and one sounds like a music venue. Again, that's just me. You see, back in the early 20th century, the space was the Marathon Motor Works building, so I can certainly see the appeal of referencing a bit of history in the name.
Shuffle over to Lightning 100's site to vote for your favorite of the three names. According to the site, "Everyone who votes on the winning name will receive (2) additional tickets to the show of their choice in the next year." Vote only once; voting's up at midnight on Aug. 11, and the winner will be announced on Lightning 100 the following day. If you want to contact the folks at Marathon Music Works/The Pink Elephant/Motorworks Live, you can hit them at neweventspace[at]gmail[dot]com.