Question

リュウ🌍

（4）の質問お願いします

They appeared in 1979
What kind of people often used car telephones?
(did)
Beeeuse Businesspeople who often outside the office
科除
(4) Why could people use later models of car telephones outside their cars?
の
→ Becauselater models had batteries
thex. とおいても見い??
(5) What were the bad points of the later models of car telephones?