The US Plugin Sales Scorecard shows the XC60 already beating out the XC90: https://insideevs.com/monthly-plug-in-sales-scorecard/
However, Tesla's numbers are below:
Tesla Model 3: 17,800 (17,800 in one month!!! Just in the US. Are you F***ing kidding me?)
Tesla Model X: 2,750
Tesla Model S: 2,625
Volvo better get their butts in gear.
(PS I love Volvo but do want an all electric XC40)