The puzzle from hell
F1Krazy's answer states that this looks like registration plates. Bouncing off this idea, this wiki page has a list of EU registration plates (not UN as initially stated. OP Edit: Sorry bout that!)
Taking the country abbreviation of each plate gives:
HGT - 271 -> Finland -> FIN
T 732 LI -> Austria -> A
UM 21(13) -> Luxembourg -> L
H 132 QE -> Austria -> A
LS 11(23) -> Luxembourg -> L
11 - (83) - XN -> Portugal -> P
SLU - (59)1 -> Hungary -> H
L 213 FM -> Austria -> A
Which gives us the clue: FINAL ALPHA
Gareth McCaughan points out that the FINAL ALPHA(BETIC CHARACTERS), or last letters give 'TIMES NUM'
Donnelle's idea is to multiply each digit, which is close, but taking into account the brackets we get:
271 => 14
732 => 42
21(13) => 26
132 => 6
11(23) => 23
11 - (83) => 83
(59)1 => 59
213 => 6
The second hint implies these are latitude and longitude coordinates. The first number of each in A1Z26 translates to N and W, giving us the coordinates.
N 42° 26' 6", W 83° 59' 6"
If you look up these coordinates you get:
The location of Hell, Michigan. (So Donnelle was technically right in her guess.) So it is in fact,
The puzzle from hell.