After last night, I'm not sure speed limits matter as much as the individual drivers...although higher speed impacts will certainly lessen our chances for survival. Last night, riding my mountain bike through my neighborhood (Maitland/Orlando) I saw an older car driving on my side of the street for no apparent reason. First I think...maybe it is someone I know who is joking with me...I quickly realize I don't know anyone with an old Buick. It is a woman in her 80's who barely can see over the steering wheel...she never turns her head towards me...she never moves to her right (the proper side of the street)...and fortunately she didn't accelerate and maintained approximately 20 mph. I drove into a driveway when she was about 3-4 car lengths from me, and she continued on as if I didn't exist. I didn't have time to do or say anything, and it would have done no good. My take away is that I am the only one who I can rely upon to look out after me, and that biking, like life, has inherent risks that we can reduce and manage, but never eliminate.