A step-through cargo bike with small tyres and a long rack will give you the most utility for your money. I replaced 99% of my car trips with an Aventon Abound LR ($2000 new, $1500~ dealer overstock from Upway). It can fit 63kg of weight on the back with enough space for one adult, two small children, or six grocery bags. I get about 80km of range out of mine and will pay $20 or so in electricity costs this year, riding it 3000km over the past year. At a Class 2 32kmh, my urban commute is about the same as driving times if not faster and much more pleasant.