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Property and Equipment, Net
 9 Months Ended
Sep. 30, 2018
Property and Equipment, Net  
Property and Equipment, Net

5. Property and Equipment, Net

 

Property and equipment, net consisted of the following:

 

 

 

 

 

 

 

 

 

 

 

 

September 30, 

 

 

December 31, 

 

 

 

2018

 

2017

 

Computer equipment

    

$

1,338

    

$

650

 

Fleet vehicles

 

 

2,076

 

 

 —

 

Manufacturing equipment

 

 

562

 

 

511

 

Lab equipment

 

 

928

 

 

721

 

Furniture and fixtures

 

 

524

 

 

327

 

Leasehold improvements

 

 

326

 

 

430

 

Property and equipment, gross

 

 

5,754

 

 

2,639

 

Accumulated depreciation

 

 

(1,345)

 

 

(480)

 

Property and equipment, net

 

$

4,409

 

$

2,159

 

 

Depreciation expense was $366 and $103 for the three months ended September 30, 2018 and 2017, respectively, and $865 and $208 for the nine months ended September 30, 2018 and 2017, respectively.