I live in Vancouver, and we have plenty of both roads and bike lanes. Its not hard to fit a bike lane that's usually 1/4th the width of a lane onto a road or allow bikes to share with cars on smaller roads. We have trucks and vans and lots of deliveries too. The reason most cities are oriented around cars is because we designed them that way and it's difficult to change - there's no logistical constraint, its just politics and cost.
I lived in Vancouver for many years, and it’s an outlier in terms of ease of bike lane installation. The city is quite new, and as it grew in the 50s and 60s the roads were designed for a future with more cars than there are now in the city. That means that there’s super wide boulevards and streets everywhere. Cities that were designed for horses and carts barely have room for cars as it is, so there’s almost no room for anything else next to them.
