I had an ELCS the 2nd time around. The elective was a much easier recovery, it was much longer for all after my first which was an emergency after about a million hours of induction.
Go on an hour's walk - 4 weeks, probably could have been sooner but had winter babies and the weather was rubbish.
Pick up baby in car seat
I didn't for ages after either - too heavy, so left the car seat in the car.
Drive
About 5-6 weeks both times, could have probably driven at 3 as pain was under control, just didn't want to risk it.
Resume exercise such as running
6 months or so, but more related to building up my fitness again.
Have sex
After my 6 week check.
Sit up in bed/on sofa without pain
About a week, but I took pain killers by the clock for the first 7 days, so it might have been sooner, I just didn't stop the analgesia until a week.
Resume normal household tasks such as washing and hoovering
A couple of weeks - I could put a load in the washing machine and hoover, but I couldn't get it up and down the stairs for another couple of weeks after that.
Move about normally with 0 pain
7 days (see above about pain killers).. but I was moving about 8 hrs after the section, up and showered / brushed my teeth because I wanted to get home the next day.
Thing is, a c-section is major surgery. Any other abdominal surgery, you're told not to lift anything heavier than a kettle for 6 weeks, but with a c-section there is somehow much more pressure to be "back to normal" while your life is turned upside down by a small screaming baby who doesn't sleep! So you shouldn't be under pressure to be back to normal in a certain timeframe, the only focus should be allowing yourself to heal and looking after the baby.