Bing found the following results
Mario Kart Tour - Apps on Google Play
Mario Kart™ 8 Deluxe for Nintendo Switch™ – Official Site
Mario Kart™ 8 Deluxe - Nintendo
Mario Kart™ 8 Deluxe - Nintendo
Mario Kart - Wikipedia
Mario Kart 8 Deluxe | Nintendo Switch games | Games | Nintendo
Mario Kart (series) - Super Mario Wiki, the Mario encyclopedia
Mario Kart Tour | Nintendo
Mario Kart 8 Deluxe Overview Trailer - Nintendo Switch
Mario Kart Tour | Nintendo