Needed: A Catchy Name For The Train

"Boston has its T, Chicago its El. San Francisco, BART... Comes now the upstart Phoenix area, seeking a catchy name for its light rail system to last the ages... Valley Metro has two linguistic challenges. The first is to insert a handy new word into the permanent vocabulary of the city through somewhat less-than-organic means, a trick that has had mixed results in Arizona. The second is to define the train before the vox populi can define it in potentially unflattering terms."