I dont risk taking weapons, get too much sh!t if caught with it/using it.
Get down to thai boxing ben, shins are a very usefull weapon 
Never had to use it mate and never would unless it was a last resort of self defence believe me.. Just saying you don't know what lunitics there are out there with god knows what kinds of weapons. Better to be safe than sorry IMO..

Especially if some **** wants your car..

Plus I sell it at work, so it's not exactly dodgy looking with it being in my car.. As I have all sorts of samples of bits and pieces like that.. Carrying a Baseball bat or similar is asking for trouble as Bobo said..