As I am from industry sector, let me throw some light on non-page 3 persons -
Nandan Nilekani of Infy had Toyota Qualis,
Ratan Tata has & drives Safari to office,
Azim Premji of Wipro had Maruti Esteem & finally his driver got fed up of car as maintenance cost were also piling up. After several pleas from his driver, he bought Toyota Corolla after using Esteem for 7 years.
Mukesh Ambani had Maybach but his driver got fed up as taking U-turns was damn difficult. Now he uses Merc S Class.
Sunil Mittal of Bharti-Airtel also uses S Class.
Gautam Singhania of Raymonds is sports car fanatic, has several sports car (some are located outside India),
Kumar Mangalam Birla uses BMW 5 Series,
A director of Thermax used to come for board meetings on bicycle. Once he came on bicycle when meeting was to be held with international delegates. After the meeting got over, his bicycle was found stolen. Reports suggest it was done on his wife's order.