Question: what is the least current
SQL: SELECT MIN("Current") FROM "1-19312274-2";

Question: how many total where last/current driver(s) is Narain Karthikeyan ( 2010 )
SQL: SELECT COUNT("Total") FROM "1-19312274-2" WHERE "Last/current driver(s)" = 'Narain Karthikeyan ( 2010 )';