PEUGEOT’S new 407 is entering a segment populated by arguably the car industry’s biggest underachievers – front-wheel drive prestige/luxury vehicles. After 120 years, you’d think many would have sorted out how they feel and steer. Being a Peugeot though, you know the 407 is sorted in this regard. But, in top-line SV Touring guise, it exhibits one unexpected trait that may shock.