The speaker proposes a strategy to increase the utilization of existing Tesla vehicles by incentivizing current owners to add their cars to a rideshare network. The financial model involves Tesla taking a small cut of the rideshare revenue, with the vehicle owner receiving the primary portion, thus providing a financial incentive for participation. This approach is targeted at Tesla owners who do not use their vehicles most of the time and are comfortable with the idea of strangers using their car. The speaker draws a parallel to the early days of Airbnb, suggesting a similar paradigm shift in public acceptance and trust, and concludes that this model would result in a "win-win" situation for all involved.