The following footnote is from Note 8 to the 2018 10-K of Tesla, Inc.:

Note &-Property, Plant and Equipment:

Our property, plant and equipment, net, consisted of the following (in thousands):

The summary of significant accounting policies included the following description of Tesla's depreciation policies:

Property, plant and equipment, including leasehold improvements, are recognized at cost less accumulated depreciation. Depreciation is generally computed using the straight-line method over the estimated useful lives of the respective assets, as follows:

Machinery, equipment, vehicles and office furniture .................  2 to 12 years

Building and building improvements. ............................................ 15 to 30 years

Computer equipment and software ............................................... 3 to 10 years

Depreciation for tooling is computed using the units-of-production method whereby capitalized costs are amortized over the total estimated productive life of the respective assets. As of December 31, 2018. the estimated productive life for Model S and Model X tooling was 325,000 vehicles based on our current estimates of production. As of December 31, 2018, the estimated productive life for Model 3 tooling was 1,000,000 vehicles based on our current estimates of production.

1. Tesla's revenue totaled $21,461,268 ($ thousands) in 2018. Compute its PPE turnover for the year.

2. Compute the percent depreciated ratio for 2018.

3. Comment on these ratios. What effect does Tesla's depreciation policies have on these ratios?

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2018 2017 $ 6,328,966 1,397,514 960,971 Machinery. equipment, vehicles and off ice furniture... Tooling.. . . Leasehold improvements. Land and buildings... Computer equipment, hardware and software. Construction in progress...... $ 4.251,711 .... . 1.255,952 789,751 2,517,247 4,047,006 487,421 807,297 395.067 2,541,588 14,029, 175 11,751,316 Less: Accumulated depreciation. (2,699,098) (1,723,794) Total ... $11,330,077 $10,027,522