CREATE TABLE table_70173 ("Month & Year" CLOB, "Episode" CLOB, "Title" CLOB, "Hammond's vehicle" CLOB, "Clarkson's vehicle" CLOB, "May's vehicle" CLOB, "Back-up" CLOB, "Budget" CLOB)

Which month and year held the Bolivia Special title?
SELECT "Month & Year" FROM table_70173 WHERE "Title" = 'bolivia special'
SELECT "Month & Year" FROM "table_70173" WHERE "Title" = 'bolivia special'