If portability is a problem in your case, consider your options carefully and go individually through the models of equally. In general, you will most likely find yourself with a scooter, as most scooters are foldable, and most bikes aren’t. Many cheap electric scooters will come with 8-inch wheels. https://www.electricscooter.ltd/new-electric-motorcycles-best-price-fastest-20kw-electric-motorcycles-for-sale/