My doctor wanted me to wait to drive until I could walk without any assistance, but once I was down to one crutch and/or cane, I started to drive. I had to keep my seat back farther than normal and use my left foot to brake at first, but I was fine. I only used a walker while I was in the hospital. They asked me what I would prefer to use at home, but a walker would have been impractical. My doctor wanted me down to one crutch and then a cane pretty quick (as did my PT). I used 2 crutches outside for awhile because we had had above normal snow this winter and so there was lots of ice outside, so I was extra cautious. I saw in another thread someone was still using elbow crutches at 6 weeks post-op, but I guess everyone is different.
Good luck and I wish you a speedy recovery, Raul!