Only for new liscences, and that provisions seems unable to get a majority at the moment. Which kind of makes sense, why limit it to weight? EVs and most family

Only for new liscences, and that provisions seems unable to get a majority at the moment. Which kind of makes sense, why limit it to weight? EVs and most family cars are above the proposed 1.8 tons. Limiting it by power / speed (EVs have a ton of power but lower top speeds) would make more sense, similar to what we had for motorbikes in the past.