The answer is park and rides. No you cannot completely remove the car from the equation, but you can make the car a last mile solution, or partner up with services like Uber for your last mile solution. GO is proof that this can work really really well. To reach downtown Toronto from Maple, a train will get you there in 34 mins. With GO RER, Metrolinx claims that number will go down to 20 mins. The same trip right now would be 45 mins by car and it is currently off peak times where traffic is clear. Sure this is a very specific example that only applies to people who live right next to the GO station, but in general the vehicle catchment area around GO stations is quite large and they would be a much faster route for many even if they don't live near a station. Part of why GO RER is such a transformational project is that it will turn GO from a Park and Ride service that only serves peak hour commuters to a service that serves peak hour commuters, off peak hour visitors, and increase local access to frequent transit. Generally it could take you 15 mins to drive 7km down suburban arterials which means if you have a car and you live within a 7km radius around Maple, at best with GO RER reaching downtown will take 35 mins, and at worst, 50 minutes if you arrive right when the train leaves. In general though it will be a faster AND CHEAPER trip since that's less you have to pay for gas, that's less you have to pay for maintenance, that's more time you can spend working or doing other things while waiting on a train, and remember, I am comparing the GO train to OFF PEAK driving times where traffic is clear. Get to on peak times and the deal is even sweeter, which makes sense considering that's the market GO has been successfully catering to for the past 54 years.