Walking in the sun is too much effort and makes you sweat ? Buy sunscreen, bring an extra t shirt and stop making excuse. Sweat is a perfectly normal response to heat, your body knows how to deal with it. God damn it, some kids in africa run 10km to go to school every day while eating 5 time less food than you and they probably complain less.
Rain is a viable excuse for burning fossil fuel and moving 2 tons of steel to transport a 80kg meat bag ?
Unless you're disabled or commute 30+km a day you're better off with good gear and an electric bike. It's cheaper, better for your health, better for local and global pollution, &c. ICE vehicles have nothing to do in city centers. Good public transport + a fleet of government owned electric taxies would solve every issues.