Or you&#x27;re in the &quot;techie: try it&quot;. Since this technology doesn&#x27;t really exist yet and nearly everything about it is pure prediction.<p>Your &quot;of course&quot; isn&#x27;t really true, is it? I mean, rental cars don&#x27;t come with a toolbox or first aid kit. To be fair, the toolbox was because I had a crappy car and needed to be able to fix it. A car rental service would include maintenance, but that extra work, and cycling out the cars more often, would probably be more expensive than having my own car, no?<p>(BTW, the &quot;spare tire&quot; was in the #1 category, under &quot;people will lease their cars to other while they don&#x27;t need them&quot;, not the #2 category of &quot;people will lease cars&quot;.)<p>I feel like you handwaved the &#x27;there would be a solution available&#x27; by considering and dismissing only one point, and not seeing it as an example of a larger set of problems.<p>Where is the ski rack? The gun rack? The bike rack? The dog crate? The trailer hitch? The tinted windows? Choice of color? After-market satellite radio - or CB? Car underlighting? The special sound system? Fog lamps? &quot;Baby on Board&quot; decals? Wheelchair lifts, lowered floor, or scooter hoist for those with handicaps? Phone or laptop charger?<p>Skiing friends of mine would leave their gear (boots, skis, packs, masks, gloves, poles, etc. plus duct tape and tools to fix minor problems) in the back of their SUV so they could take off for the mountains during snow season. It&#x27;s a hassle to lug all that equipment in and out for each trip, and you might easily forget something. My mother leaves a sewing machine (one of five) and other sewing gear in her trunk to make it easier to go to quilting events.<p>&gt; You would have winter tires<p>Perhaps. It&#x27;s hard to say. I lived in Santa Fe, and in the city didn&#x27;t need snow tires. My friends lived in the country, at higher elevation, on the end of a long dirt driveway. New Mexico has a lot of dirt roads, so it&#x27;s best to be prepared. Even if the cars in Santa Fe had their tires swapped out, what about the cars of day-trippers from Albuquerque? Or those in Sacramento who decide to go to Tahoe?<p>As I only needed the sand once, it seems like an expense to swap out the tires each year for something that isn&#x27;t essential. How much will that add to the cost?