You need to compare the 2019
You need to compare the 2019 Volt with the Model 3, since the Volt will have improved by the time the Model 3 ships in significant volume.
The Volt will be much more affordable in the US with attractive lease rates that Tesla won't offer. The Volt is a hatchback. The Volt has proven reliable. The Volt has 5-minute fast refueling capability at 100,000 fast fueling stations. The Volt easily allows most people to drive more than 80% emission free, with none of the compromises of a pure BEV.