Miami's traffic is becoming chaos and it is great to see someone wants to do something about it. I've heard for years there's no room for more highways due to the tight patches of land and the surrounding water. so, why not use waterways?!?!? I was in Europe this year and in a small town in Italy, they had ships that would carry you across a huge lake, cars included. So why not use the same systems to connect Miami Beach to the main land? as we stand there are only a handful of ways to commute in and out of the Beach. 5th, 41st, 79, 163, and 191st (i think, the Aventura bridge) most of which suffer from added 'boat traffic' which sometimes cause the bridge to 'break' for an hour, and have huge car traffic delays.
Having Public boats that take people and cars from added designated areas (like Haulouver Beach Park, or the new park next to the American Airlines Arena to South BEach) would definitely alleviate congestion on the few and archaic bridges we currently rely on.
A step further would be to create public boatlines that use waterways that connect from Aventura to Downtown. This would not only be an "attraction" that would make people want to use them, but again it would even make sense for people to leave their cars back home and commute to work using these alternatives.
The idea of making cards that could work for transfering from the bus to the water bus would also make connections a breeze.
I used the Metro Rail for the first time after 18 years of living in Miami, and it was great. Why did I waited so long? because there are very few stations and none by house. Also, I feel most people even know about its convenience! there is no major marketing around it, so people can't use what they don't know about. connecting these 3 forms of commuting (busses, waterways, and metro rail with added connections from east to west) would reduce traffic significantly.