A: You can travel to Tirupati, Vellore, Puducherry, Bengaluru, Vijayawada, Tiruchirappalli, Yercaud, Coimbatore, Kodaikanal, Mahabalipuram, Trichy, Munnar, Ooty, Coorg, Madurai, Mysore, Anantapur, Hampi, Nandi Hills, Nandi Hills, by cab from Chennai.
A: For Bannerghatta National Park people book taxi from Vellore, Bengaluru, Mysuru, etc.