The problem is it would just force people out of the market. Like in the USA the average car is getting up to the 25-35k range and is not something people can change to easily. You're asking someone working for Wal-mart wages (which tend to be what many Uber people essentially make) to incur a huge new debt load or progressively harsher taxes.
You guys need to understand the impacts of the policies you recommend, because this is why people are against climate change efforts so vigorously.
Well one option is to give subsidies for electric cars to offset this a bit, the other is hope that electric production ramps up and drives the cost down - that's why it would be increased gradually - from barely significant to unable to compete in 5 years.
Around here we already have a law that any taxi drivers (Uber and others included) cannot use a car older than 5 years.
You guys need to understand the impacts of the policies you recommend, because this is why people are against climate change efforts so vigorously.