Mobil Mercedes-Benz EQ Silver Arrow dipamerkan dalam acara International Frankfurt Motor Show (IAA) 2019 di Frankfurt, Jerman, 11 September 2019. REUTERS/Ralph Orlowski

Mobil konsep Hyundai 45 saat dipamerkan dalam acara International Frankfurt Motor Show (IAA) 2019 di Frankfurt, Jerman, 11 September 2019. REUTERS/Wolfgang Rattay

Mobil Audi Aicon saat dipamerkan dalam acara International Frankfurt Motor Show (IAA) 2019 di Frankfurt, Jerman, 11 September 2019. REUTERS/Ralph Orlowski

Mobil BMW Concept 4 saat dipamerkan dalam acara International Frankfurt Motor Show (IAA) 2019 di Frankfurt, Jerman, 11 September 2019. REUTERS/Wolfgang Rattay

Mobil Mercedes-Benz Vision EQS dipamerkan dalam acara International Frankfurt Motor Show (IAA) 2019 di Frankfurt, Jerman, 11 September 2019. REUTERS/Ralph Orlowski

Bus Bosch IoT shuttle saat dipamerkan dalam acara International Frankfurt Motor Show (IAA) 2019 di Frankfurt, Jerman, 11 September 2019. REUTERS/Wolfgang Rattay