What is now a classic view may be over sooner than later. The 21 series locomotives are being phased out, just like the M4 coaches. They are now primarily used on rush hour trains, just like the 22 series locomotives with their M2 coaches a couple of years ago. They may seem unintersting now, but we’ll look at the pictures with nostalgic feelings once the rail scene has been taken over by M6, M7 and desiro trains.