The equivalent of your $4500 motorcycle is the $4000 - $6000 mini EVs sold in second-tier chinese cities[1], the best-known of which is probably the Wuling Hongguang Mini EV[2]. There are many reviews of them on Youtube, some in English by native english speakers. These EVs have the same number of airbags as motorcycles, but more seatbelts.
Edit: apparently they now have more airbags than motorcycles, as well as more roll cages and other safety features.
Edit: apparently they now have more airbags than motorcycles, as well as more roll cages and other safety features.
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1. https://en.wikipedia.org/wiki/Chinese_city_tier_system
2. https://en.wikipedia.org/wiki/Wuling_Hongguang_Mini_EV