Welcome to the eighth post of the Great Writing Challenge of 2012. Five days a week for six months, I will be given a topic to write about. The stipulation: it must be 250 words (or more), and positive in tone. If you would like to suggest topics for me to write about, please email me at TheRebeccaProject [at] gmail [dot] com. BART trains are cool. They look like portals from the future, prepared to take you back with them. Even the horns sound digital. Harrison Ford caught one in Blade Runner. Or maybe I just made that up. But he totally would have. Each day, I ride the futuristic cars to work and back. BART is my preferred form of public transport, and mostly an enjoyable experience. The system is known for its large, comfy seats, and has a completely different feel from the hard plastic seats on trains in New York and London. I am a creature of habit and each day, I make a beeline for my preferred seat: the reverse-riding left …