Nine may not logically follow five and six, but in the world of Hyundai's EV sub‑brand the large, three‑row, dual‑motor Ioniq 9 SUV has joined its existing pure‑electric Ioniq 5 and 6 stablemates. With a price tag to match its substantial scale it propels the South Korean maker into new territory in the local new car market. Will it make an impact? Andrew Chesterton is on a mission to find out.