A base trim Model 3, with its slightly smaller than 60 kWh pack, will add 140 highway miles of charge slower than the maximum S90D rates that people usually toss around.Where the Bolt falls down though is the lack of fast charging infrastructure. The infrastructure that is there is extremely slow vs. Tesla's Supercharger. GM has openly said they have no intention of building a charging network whatsoever. No fast charging, no road trips for me. No road trips, I ain't buying it.
A Bolt EV at a 125A "50 kW" charger might take an extra 20-30 minutes. So, maybe 30-ish minutes for the Model 3 and maybe 55-ish minutes on the Bolt EV. If you are sitting down at a restaurant to eat during charging then the perceptual time difference won't matter all that much. The Bolt might be able to do better on a 200A CCS charger but GM hasn't disclosed anything about that yet.
Although I'd like to see GM contribute meaningfully to bootstrapping a highway-oriented charging infrastructure it ultimately doesn't matter who builds it. VW will apparently have lots of mandated money to spend on EV charging infrastructure under their Dieselgate consent decree and they have the business motivation to build a competitive Bolt-compatible CCS Supercharger-like network with that cash.