vehicle deck

Okay, this is not very consistent, due to having 70 cards, and this isn't legal in any format, mainly due to the presence of Sol Ring. I'd cut that and Land Tax, as well as Gleam Of Authority and Thopter Assembly. Here are the reasons...

Shrine Of The Forsaken Gods: Temple Of The False God is faster than this, just sayin'.
Sol Ring: Just to make it legal in most formats.
Land Tax: Not as effective in the fast formats like Modern or Legacy.
Thopter Assembly: This deck shines in faster formats, why bother with this 6 drop? Sure, you get tokens, but there are faster ways to make them.
Gleam Of Authority: You have NO other way of putting +1/+1 counters.

Here are some better add ins.

Smuggler's Copter: When a card gets banned in standard, it's usually good. This gives you some much needed draw.
Krenko's Command/Gather The Townsfolk/Raise The Alarm: All Of These are basically another version of Servo Exhibition. Getting two 1/1 for 2 mana is a good deal.
Mind Stone: Early game ramp, late game draw.

Hi! I have an EDH depala deck but never played a regular game with vehicules. First, I'd drop 3x sol ring, as it is not legal in any format to have more than 1. Then, I'd either drop depala or switch your admirals and fanatics for dwarf cards (admirals for aethershield artificer and fanatics for sram, senior or gearshift ace). This way, you have more dwarves to draw with depala.

Then, I think you have to little vehicules and too much booster. Modifications are great, but the strength of vehicules is that they are not creatures when not needed. They are imune to destroy creatures spell. If you make them creatures all the time, you lose this ability. I'd keep a maximum of 2 of each. I'd replace them by dwarf cards or dwarven recruiter.

To take advantage of the fact vehicules are not creatures, why don't you change your 2x gleam of autority for 2x wrath of god or 2x fumigate?

land tax is cool, but I think you need cultivator's caravan. Nice vehicule that gives you a land and no need to crew to use it! Fleetwheel cruiser is also pretty awesome as it has haste.

I'd switch 2x assembly for 2x skysovreign or I'd consider using smugler's copter that can be crewed with the thopters or you could use 2x metalwor colossus.

Cheers