This SUV is flashing yellow lights at the top.
That's a runway inspection, which is carried out at regular intervals throughout the day (depends on the airport).
So, the vehicle wasn't following the plane, but was waiting for it to land so the runway inspection can be carried out.
The surfaces of all movement areas including pavements (runways, taxiways and aprons) and adjacent areas shall be inspected and their conditions monitored regularly as part of an aerodrome preventive and corrective maintenance programme with the objective of avoiding and eliminating any foreign object debris (FOD) that might cause damage to aircraft or impair the operation of aircraft systems.
— ICAO Annex 14
Runway inspection - Out and about with Zurich's Airport Authority - Swiss International Air Lines