Question: What is the epa rated combined fuel economy for the Nissan Leaf?
SQL: SELECT "EPA rated combined fuel economy" FROM "1-23840623-4" WHERE "Vehicle" = 'Nissan Leaf';

Question: What is the operating mode of the Coda?
SQL: SELECT "Operating mode" FROM "1-23840623-4" WHERE "Vehicle" = 'Coda';

Question: What is the dirty electric grid rocky mountains (denver) for the vehicle with the clean electric grid california (san francisco) of 160 g/mi (99 g/km)?
SQL: SELECT "Dirty electric grid Rocky Mountains (Denver)" FROM "1-23840623-4" WHERE "Clean electric grid California (San Francisco)" = '160 g/mi (99 g/km)';

Question: How many dirty electric grid rocky mountains (denver) vehicles have an  epa rated combined fuel economy of 102 mpg-e (33kW-hrs/100mi)?
SQL: SELECT COUNT("Dirty electric grid Rocky Mountains (Denver)") FROM "1-23840623-4" WHERE "EPA rated combined fuel economy" = '102 mpg-e (33kW-hrs/100mi)';

Question: What is the epa rated combined fuel economy for the All-electric vehicle with dirty electric grid rocky mountains (denver) of 330 g/mi (205 g/km)?
SQL: SELECT "EPA rated combined fuel economy" FROM "1-23840623-4" WHERE "Operating mode" = 'All-electric' AND "Dirty electric grid Rocky Mountains (Denver)" = '330 g/mi (205 g/km)';

Question: How many clean electric grid california (san francisco) figures are given for the Nissan Leaf?
SQL: SELECT COUNT("Clean electric grid California (San Francisco)") FROM "1-23840623-4" WHERE "Vehicle" = 'Nissan Leaf';