Another way, similar to the OPed and LanX's solutions:

c:\@Work\Perl\monks>perl -wMstrict -MData::Dump -le
"use autodie;
 ;;
 my $file = qq{(Special)\n}
          . qq{TG: VIN:1000000\n}
          . qq{type: a very special type of plane\n}
          . qq{\n}
          . qq{(Special)\n}
          . qq{TG: VIN:1000001\n}
          . qq{type: a very special type of car\n}
          . qq{\n}
          . qq{ \t \n}
          . qq{(Special)\n}
          . qq{TG: VIN:1000002\n}
          . qq{type: a very special type of boat\n}
          ;
 ;;
 open my $fh, '<', \$file;
 ;;
 my $rx_vin  = qr{ \d+ }xms;
 my $rx_text = qr{ \S (?: \s* \S+)* }xms;
 ;;
 my %hash;
 ;;
 local $/ = '';
 while (my $block = <$fh>) {
   my $extracted =
   my ($vin, $text) =
   $block =~ m{
     \A \s* \Q(Special)\E \s+ TG: \s+ VIN: \s*
     ($rx_vin)
     \s+ type: \s+
     ($rx_text)
     \s* \Z
     }xms;
   die qq{bad block '$block'} unless $extracted;
   die qq{duplicate vin '$vin'} if exists $hash{$vin};
   ;;
   $hash{$vin} = $text;
   }
 ;;
 close $fh;
 ;;
 dd \%hash;
"
{
  1000000 => "a very special type of plane",
  1000001 => "a very special type of car",
  1000002 => "a very special type of boat",
}
[download]

Please note that:

• A VIN (at least for a car) has a definite pattern that could be used to make  $rx_vin quite discriminating (it's quite naive now (update: indeed, it's incorrect for an automotive VIN; don't know about boats or planes)).
• The  $rx_text regex could probably be sharpened, but I don't know just what your text looks like.
• The whole extraction pattern is fairly tolerant of whitespace, but will die at the first "block" that doesn't look like a block, and you may not want this. (Also rejects duplicate VINs.)

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