The Blue Bus was a huge motor bus especially designed to suit the diverse requirements of Meher Baba's group. It had a partition forming a closed compartment for the Indian Women disciples of Meher Baba, who were kept in relative seclusion. The Blue Bus tour began on with about thirty disciples both men and women -Eastern and Western - on 8 December 1938. The bus was driven by Elizabeth Patterson, one of Baba's western women disciples. This tour lasted till May 1939.

The main purpose of the tour was to contact the God-intoxicated recluse called "masts" by Meher Baba. The luggage included pots and pans, stove and buckets, for the ablutions of the masts, as well as thirty travelling bags and bedding rolls packed on the top of the bus. A number of men disciples were sent ahead by train to arrange for the accommodation in towns and make enquiries concerning the "masts".

Meher Baba loved these God-intoxicated souls like a mother loves her dear children. Inner spiritual work with the consciousness of these "masts" constitutes a highly significant and mystic part of Meher Baba's Universal Work as the Avatar of the Age. Meher Baba covered more than 90,000 miles across the length and breadth of the country making use of all sorts of modes of travel. Baba always travelled incognito hiding His spiritual status; but His divine identity as the Avatar was invariably recognized and acclaimed by these "masts".

The Blue Bus tour covered Sholapur, Hyderabad, Nagpur, Jabalpur, Bhopal, Jaipur, Pushkar, Ujjain, Mandla, Benaras, Kanpur, Agra, Mathura, Brindaban, Delhi, Ajmer and Sarnath (All towns in India).

The "Blue Bus" tours are vividly described by Rano Gayley, one of Baba's western women disciples, in her book, Because Of Love. Dr. William Donkin exhaustively describes Meher Baba's work with the God-intoxicated in his book, The Wayfarers. The body of the "Blue Bus" is now kept permanently fixed at MEHERAZAD as a sacred exhibit.