Sorry to sound negative but quit whilst you are ahead.
Those who want to not use their cars already will and the rest wont be that bothered. Why would I want to spend longer commuting than I had to, I would also include shower / changing time in that ie door to desk? It my personal time that is being used, if work want me to spend longer getting to work that I need to that’s fine if they want to pay or incentivise me to do it. I have commuted by bike and its much nicer sat in the car