The walker, I don't know. I am a newbie for a few days and I used my first weekend in modifying the HUD because the orignal distracted me to play (I appreciate the effort of the creator). So I don't have a walker to test the changes and I don't really know how to get it or how much game time it will take.
I really know I'm old now because I've just been offered free flu jabs, plus a free bus pass and am only a few months away from my pension but mainly because I don't see how SICK is an adjective describing something that is cool or excellent. To describe something being sick is to give a compliment. Or is is an acronym? Super Orsome Cooly Kool