Dijelajahi semua celah-celah yang ada di atap gerbong.

Berdasarkan kutipan berikut,
lift surfing = tindakan naik ke atap lift dan menggunakan alat2 kontrol yg ada di sana untuk menggerakkan lift.
Tindakan ini biasanya dilakukan anak2 usia belasan tahun sekedar untuk bermain2. Memang, ini sebuah permainan yg sangat berbahaya. Seharusnya lift digunakan untuk naik-turun lantai sebuah gedung di ruang lift aman yg telah tersedia, malah disalahgunakan untuk bermain2. Karena itu, saya mengusulkan

lift-surfing = penyalahgunaan lift

Berikut kutipan & referensinya:
The fatal accident occurred whilst the boy and a friend were *lift-surfing* - *the practice of riding on the roof of a lift and using controls there to activate the lift.* In recording his verdict, the Coroner pointed out that access to the roof area was only possible if the access trap had been vandalised. The Council was understood to be piloting a new lift security system, which incorporated an immobilising device activated by *misuse of the lift.*

Boy dies after falling eight floors in *'lift-surfing' craze.* A mother warned children against the dangers of lifts yesterday after her 10-year-old son plunged more than 100 feet to his death while *playing on the roof of an elevator* at a Leeds housing estate. Jean Illingworth described how she had also warned her son, Paul, about the perils of *"lift-surfing", in which youngsters travel on lifts as they move up and down the shaft.*

Nampaknya ‘lift surfing’ termasuk menghentikan lift dengan cara naik ke atap, menunggangi lift sementara orang di dalam gerbong mengendalikannya, serta mengendalikan lift dari atap lift (sesuai dengan penjelasan Hipyan). Oleh karena itu saya usulkan terjemahan diatas yang bertujuan mencakup ketiga-tiganya.

Demikianlah tindakan itu saya bayangkan.