What type of engine does the model with model designation 97100 have?
CREATE TABLE "technical_specifications" (
  "model_type" text,
  "model_designation" text,
  "engine" text,
  "wheelbase_mm_inch" text,
  "gvw_kg_ton" text,
  "axle_ratio" text
);
SELECT "engine" FROM "technical_specifications" WHERE "model_designation"='97100';